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<h2><span class="refentrytitle">Struct template or_parser</span></h2>
<p>boost::parser::or_parser</p>
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<h2 class="refsynopsisdiv-title">Synopsis</h2>
<div class="refsynopsisdiv"><pre class="synopsis"><span class="comment">// In header: &lt;<a class="link" href="../../headers.html#doxygen.headers.parser__fwd_8hpp" title="Header &lt;boost/parser/parser_fwd.hpp&gt;">boost/parser/parser_fwd.hpp</a>&gt;

</span><span class="keyword">template</span><span class="special">&lt;</span><span class="keyword">typename</span> ParserTuple<span class="special">&gt;</span> 
<span class="keyword">struct</span> <a class="link" href="structboost_1_1parser_1_1or__parser.html" title="Struct template or_parser">or_parser</a> <span class="special">{</span>

  <span class="comment">// <a class="link" href="structboost_1_1parser_1_1or__parser.html#id-1_3_26_11_6_1_1_18_3-bb">public member functions</a></span>
  <a class="link" href="structboost_1_1parser_1_1or__parser.html#doxygen.headers.structboost_1_1parser_1_1or__parser_1a4ca974986d9680d2a56a3037931ae66c"><span class="identifier">or_parser</span></a><span class="special">(</span><span class="identifier">ParserTuple</span><span class="special">)</span><span class="special">;</span>
  <span class="keyword">template</span><span class="special">&lt;</span><span class="keyword">typename</span> Iter<span class="special">,</span> <span class="keyword">typename</span> Sentinel<span class="special">,</span> <span class="keyword">typename</span> Context<span class="special">,</span> 
           <span class="keyword">typename</span> SkipParser<span class="special">&gt;</span> 
    <span class="keyword">auto</span> <a class="link" href="structboost_1_1parser_1_1or__parser.html#doxygen.headers.structboost_1_1parser_1_1or__parser_1ac1eb8c375c79693e36d7f2e602134b98"><span class="identifier">call</span></a><span class="special">(</span><span class="identifier">Iter</span> <span class="special">&amp;</span><span class="special">,</span> <span class="identifier">Sentinel</span><span class="special">,</span> <span class="identifier">Context</span> <span class="keyword">const</span> <span class="special">&amp;</span><span class="special">,</span> <span class="identifier">SkipParser</span> <span class="keyword">const</span> <span class="special">&amp;</span><span class="special">,</span> 
              <span class="emphasis"><em><span class="identifier">unspecified</span></em></span><span class="special">,</span> <span class="keyword">bool</span> <span class="special">&amp;</span><span class="special">)</span> <span class="keyword">const</span><span class="special">;</span>
  <span class="keyword">template</span><span class="special">&lt;</span><span class="keyword">typename</span> Iter<span class="special">,</span> <span class="keyword">typename</span> Sentinel<span class="special">,</span> <span class="keyword">typename</span> Context<span class="special">,</span> 
           <span class="keyword">typename</span> SkipParser<span class="special">,</span> <span class="keyword">typename</span> Attribute<span class="special">&gt;</span> 
    <span class="keyword">void</span> <a class="link" href="structboost_1_1parser_1_1or__parser.html#doxygen.headers.structboost_1_1parser_1_1or__parser_1a74a236ea67bfd66b17665d16cba699a4"><span class="identifier">call</span></a><span class="special">(</span><span class="identifier">Iter</span> <span class="special">&amp;</span><span class="special">,</span> <span class="identifier">Sentinel</span><span class="special">,</span> <span class="identifier">Context</span> <span class="keyword">const</span> <span class="special">&amp;</span><span class="special">,</span> <span class="identifier">SkipParser</span> <span class="keyword">const</span> <span class="special">&amp;</span><span class="special">,</span> 
              <span class="emphasis"><em><span class="identifier">unspecified</span></em></span><span class="special">,</span> <span class="keyword">bool</span> <span class="special">&amp;</span><span class="special">,</span> <span class="identifier">Attribute</span> <span class="special">&amp;</span><span class="special">)</span> <span class="keyword">const</span><span class="special">;</span>
<span class="special">}</span><span class="special">;</span></pre></div>
<div class="refsect1">
<a name="id-1.3.26.11.6.20.4"></a><h2>Description</h2>
<p>Applies each parser in <code class="computeroutput">ParserTuple</code>, in order, stopping after the application of the first one that succeeds. The parse succeeds iff one of the sub-parsers succeeds. The attribute produced is a <code class="computeroutput">std::variant</code> over the types of attribute produced by the parsers in <code class="computeroutput">ParserTuple</code>. </p>
<div class="refsect2">
<a name="id-1.3.26.11.6.20.4.3"></a><h3>
<a name="id-1_3_26_11_6_1_1_18_3-bb"></a><code class="computeroutput">or_parser</code> public member functions</h3>
<div class="orderedlist"><ol class="orderedlist" type="1">
<li class="listitem"><pre class="literallayout"><a name="doxygen.headers.structboost_1_1parser_1_1or__parser_1a4ca974986d9680d2a56a3037931ae66c"></a><span class="identifier">or_parser</span><span class="special">(</span><span class="identifier">ParserTuple</span> parsers<span class="special">)</span><span class="special">;</span></pre></li>
<li class="listitem"><pre class="literallayout"><span class="keyword">template</span><span class="special">&lt;</span><span class="keyword">typename</span> Iter<span class="special">,</span> <span class="keyword">typename</span> Sentinel<span class="special">,</span> <span class="keyword">typename</span> Context<span class="special">,</span> 
         <span class="keyword">typename</span> SkipParser<span class="special">&gt;</span> 
  <span class="keyword">auto</span> <a name="doxygen.headers.structboost_1_1parser_1_1or__parser_1ac1eb8c375c79693e36d7f2e602134b98"></a><span class="identifier">call</span><span class="special">(</span><span class="identifier">Iter</span> <span class="special">&amp;</span> first<span class="special">,</span> <span class="identifier">Sentinel</span> last<span class="special">,</span> <span class="identifier">Context</span> <span class="keyword">const</span> <span class="special">&amp;</span> context<span class="special">,</span> 
            <span class="identifier">SkipParser</span> <span class="keyword">const</span> <span class="special">&amp;</span> skip<span class="special">,</span> <span class="emphasis"><em><span class="identifier">unspecified</span></em></span> flags<span class="special">,</span> <span class="keyword">bool</span> <span class="special">&amp;</span> success<span class="special">)</span> <span class="keyword">const</span><span class="special">;</span></pre></li>
<li class="listitem"><pre class="literallayout"><span class="keyword">template</span><span class="special">&lt;</span><span class="keyword">typename</span> Iter<span class="special">,</span> <span class="keyword">typename</span> Sentinel<span class="special">,</span> <span class="keyword">typename</span> Context<span class="special">,</span> 
         <span class="keyword">typename</span> SkipParser<span class="special">,</span> <span class="keyword">typename</span> Attribute<span class="special">&gt;</span> 
  <span class="keyword">void</span> <a name="doxygen.headers.structboost_1_1parser_1_1or__parser_1a74a236ea67bfd66b17665d16cba699a4"></a><span class="identifier">call</span><span class="special">(</span><span class="identifier">Iter</span> <span class="special">&amp;</span> first<span class="special">,</span> <span class="identifier">Sentinel</span> last<span class="special">,</span> <span class="identifier">Context</span> <span class="keyword">const</span> <span class="special">&amp;</span> context<span class="special">,</span> 
            <span class="identifier">SkipParser</span> <span class="keyword">const</span> <span class="special">&amp;</span> skip<span class="special">,</span> <span class="emphasis"><em><span class="identifier">unspecified</span></em></span> flags<span class="special">,</span> <span class="keyword">bool</span> <span class="special">&amp;</span> success<span class="special">,</span> 
            <span class="identifier">Attribute</span> <span class="special">&amp;</span> retval<span class="special">)</span> <span class="keyword">const</span><span class="special">;</span></pre></li>
</ol></div>
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<div class="copyright-footer">Copyright © 2020 T. Zachary Laine<p>
        Distributed under the Boost Software License, Version 1.0. (See accompanying
        file LICENSE_1_0.txt or copy at <a href="http://www.boost.org/LICENSE_1_0.txt" target="_top">http://www.boost.org/LICENSE_1_0.txt</a>)
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